US2469637A

US2469637A - Umbrella frame

Info

Publication number: US2469637A
Application number: US693703A
Authority: US
Inventors: Wayne S Evans; Louis G Tartaglia
Original assignee: SW Evans and Sons Inc
Current assignee: SW Evans and Sons Inc
Priority date: 1946-08-29
Filing date: 1946-08-29
Publication date: 1949-05-10
Anticipated expiration: 1966-05-10

Description

May 10, 1949.

w. s. EVANS ET AL UMBRELLA FRAME Filed Aug. 29, 1946 IN VEN TOR.

Patented May 10, 1949 UMBRELLA FRAME Wayne S. Evans and Louis G. Tartaglia, Philadelphia, Pa., assignors to S. W. Evans & Son,

Philadelphia, Pa.

Application August 29, 194.6, Serial No. 693,703 4 claims. (01.'135-30) The object of the invention is to provide improvements in umbrella and parasol frames, reference especially being made to the Wireless type of frame, wherein no wires are employed for pivotally securing the inner ends of the ribs and stretchers indirectly to the shaft, or directly to the usual notch and runner mounted thereon, sq as to thereby produce a better structure at less cost, and at the same time one that is more easily repaired, as Well as onein which the breaking of a single hinge element does not release all of the ribs or stretchers, as has heretofore usually been the case.

Another and more specific object is to provide in frames of this character, which will hereinafter be referred to by the generic term of umbrella f rames, annular attaching members for subsequent mounting upon the umbrella shaft, called notches or runners as the case may be, each of said members comprising a pair of telescoped, cylindrical elements, provided with a slotted L-shaped ange having circumferentially spaced slots, and the other being provided with an initially conical flange also having circumferentially spaced slots of the same number and position as the slots of said iirst iiange, said latter flange when bent into a plane at right angles to the common axis of said members to enclose an annular space between said members which is Wholly enclosed except for said slots, a ring within said space having circumferentially spaced recesses in alignment with the pairs of slots in said flanges, and a rib or stretcher end portion ex tending radially into said space through said slots and having trunnions that prevent the escape of said end from within said recess, said ring taking the radially inward thrust upon said rib or stretcher, while the sides of the rings recesses operating to prevent lateral shifting or turning or said rib or stretcher other than in a plane coincident with the axis of said notch or runner and the shaft which is surrounded thereby.

With the objects thus briefly set forth, the invention comprises further details of construction and operation, which are hereinafter fully brought out in the following description, when read in conjunction with the accompanying drawings, in which Figs. 1 and 2 are, respectively, the plan and side elevations'the latter being partially in section, of the inner shell or tubular member of the improved notch or runner construction; Figs. 3 and 4 are corresponding views of the improved ring; Figs. 5 and 6 are similar views of the improved outer shell or tubular telescoping member of said notch or runner; Fig. 7

l '2 is a longitudinal section of the three elements of Figs. 1 to 6 in assembled relation but before the initially conical flange of the inner shell or tubu lar member is flattened against the intervening ring; Fig. 8 is similar;y to Fig. 'l but showing the end portion of a rib or stretcher in operative po-` sition and the last-mentioned flange flattened in final position; Fig. 9 is a front elevation of the assembly shown in Fig. 8 partially broken away; and Fig. 10 is a plan of a ring that is modified to the extent of having'more peripheral recesses than the ring shown'in Figs. 3 and 9.

Referring to the drawings, it is to be understood that the structureshown in the drawings represents either a notch .or runner, for while the proportion of its length to its diameter is that of a notch, the only diierence between it and a runner to which the invention'is applied is in its length and incorporation of any suitable means for yieldingly maintaining such runner in a given position upon the usual shaft. Accordingly, the alternative term notch or runner will be used to designate the fact that the invention is equally Well adapted to each of them, and for want of a generic term.

The inner shell, as shown per se in Figs. 1 and 2, comprises a cylindrical portion I, having circumferentially spaced lugs or ears 2, initially extending from it in che longitudinal direction. In the opposite direction there initially extends a diagonally outwardly directed flange 3, having a series of circumferentially spaced, radially extending slots 4, which are ten in number for a ten-rib umbrella, or sixteen in number for a sixteen-rib umbrella, though only a representative eight slots are shown for purposes of illustration.

In Figs. 3 and 4 is shownr a plane ring 5 having a central aperture 6 of sufficient size to re- -ceive the outer'diameter of the cylindrical portion of the inner ring. -Theouter periphery of this ring is broken by 1a series of equally spaced, preferably rectangular recessesor cut-outs 1, each of which has a radiallyinwardly projecting, .preferably rectangular central extension 8 of less Width than thel major outer portion of the cutout.

The size and shapev of these. recessed cut-outs lsubstantially conformto theishape of the radially inner end portionsof ftheribs and stretcher-s 9 of an umbrella frame, each of which latter in the improved invention comprises a iiattened portion l0, from the laterally opposite sides of which extend the ends ll' of a pin or rivet, which serve as trunnions about which the rib or stretcher oscillates angularly.

Referring to Figs. 8 and 9, it will be seen that the extreme end of the flattened portion IU of the rib or stretcher is positioned in the inner cutout extension 8, when the umbrella frame is in open or extended position, While at the same time the trunnions lilarepositioned Tin 'the ylaterally opposite ^portions ia Kof the recess -l.

In Figs. 5 and 6 is shown the improved outer shell, which comprises a cylindrical portion l2 of such internal diameter as to slidably receive telescopically the corresponding portion I of said inner shell, after which the ings for rears 2 vare deflected radially outwardly (Figs. '7 'and B) to prevent accidental separation of said shells following assembly. The opposite ,end of said-outer shell merges into a planular section I3, which thence terminates in a .cylindrical extension i4, the outer diameter of which is substantially equal 'to that 4oi' ithe flange L3 of the inner shell when the latter is flattened into Lits lnal Iform (Figs. 8fand9`).

r'Circumferentially .spaced :slots d'5 extend innwardly :from the 4outer free :edge of said ilanges I-:3 and 2|'4 to a :depth having substantially the same ,diameter as that 'of 'the 'inner ends of the vslots 4 in athenange 3 of said .innershell (Figs. 7 and 8). .Also it `will .be noted as an essential condit`ionof theinvention, that .the axes of the inner :and outer rshe'lhslots f4 Aand `fl 5 zand the intervening ring cutouts HAB :must be in alignment, in order -to liprclvide for :and 4insure :free oscillation fof the .ribs :or 'stretchers lpositioned therein.

Referring to iFig. 10., there is shown a slightly f :modified form of ring 126, having `an 'axial bore 11, vcorresponding to Ithe bore 6 yin the ring 5, and outwardly directed, circumferentially spaced cutouts i8, which construction is primarily designed for use in-astandardsixteen-rib umbrella frame, or lone -of suiiiciently ymore ribs :than can :be provided for -by the construction shown .in Figs. 1-9. :In -this case, ythe -end `of .the rib or .stretcher alone enters a cutout 1.8 and nds there what maybe termed a thrust-bearing, While the .trunnions of the rib or stretcher .ride or oscillate upon the peripheralsurface I9 of .said ring, upon "the .opposite sides of the particular vcutout into which the end .of the rib or stretcher extends.

By either o'f .these arrangements, `.the inal assembly "df the two shells, .ring Aand .rib or stretcher is maintained, withoutthe 'slightest tendency of either-ofthe il'anges "3 and 14 to be deflected away -from their respectivel loperative positions, while yinfgenera-lamore rigid and resultingly permanent `'structure is insured.

#Having thus described our invention, what we claim and desire to protect by Letters Patent of the United States is:

1. :In an xumbrella frame, a `notch or runner construction comprising an inner shell having a -.cylindrical .portion Aand a radially slotted plane llange, an outer shell comprising la vcylindrical portion in telescopic relation to the corresponding portion .of said `inner shell and `also `a plane flange having a cylindrical extension, 'said `last .mentioned iiange and its yextension Ybeing provided with spaced slots in registry with the slots of saidfinnerrshell'ange, .the .flanges 'of said shells deningan .annular .space 'between .them, and a ring lwithin said space lhaving cutouts aligned with said slots, the sides of said cutouts functioning as thrust bearings for a rib or stretcher extending through said slots into said annular space.

2. In an umbrella frame, a notch or runner construction comprising an inner shell having a cylindrical portion and a radially slotted plane flange, 'an outer shell comprising :a cylindrical portion in ytelescopic relation to i'the l'corresponding portion of said inner shell and also a plane `flange having a cylindrical extension, said lastmentioned flange and its extension being provided with spaced slots in registry with the slots ofsaid inner shell iiange, the ilanges of said shells defini-ng an annular space between them, and a ring Jwithin said space having cutouts aligned with said slots-each cutout having a central eX- tension, in combination with a rib or stretcher extending through said slots into said annular space and carrying oppositely projecting trunnions, theend of said rib or stretcher extending into said central y'cutout 'extension Vwhile said trunnions .engage the walls of said cutout upon nthe opposite sides `ofsaid extension.

'3. In .an .umbrella frame, a notch or runner `comprising .the combination of a pair of telescopic 'members .enclosing an annular space and having .circumferentially :s p a c e d apertures `vthrough which'theend'porticns of ribs or stretch- .ers extend into said space, each of said ribs or `stretchers .being provided with oppositely extend- :ing trunnions, which prevent said end portions from being freely withdrawn from Within said .annular space, and 'an annular ring within said space provided `with .cutouts to slidably receive the ends :of said ribs or 'stretchers and prevent ,them v.from shifting angularly in the plane in .which said :trunnions extend.

`4. =In an umbrella frame, a notch or runner vcomprising the .combination `of -a pair of telescopic members yenclosing yan annular space and .having circumferentially spaced .slots through 4whichextend the `endportions of ribs or stretchers, each `ofsaid `ribs or 'stretchers being provided with oppositely extending trunnions, which prevent said end portions from being freely withfdrawn f-rom (within said annular space, and an vannular ring within said space provided with circumferentiallyspaced cutouts -to receive the end :portions sor-said .ribs or stretchers and rsaid trunnions, and .eachcutout having a radially inward extension to .receive the rend only of rsaid rib or .stretched .beyondsa'id trunnions, 'said inward extension being 'operative to prevent `angular shifting of .said ribor stretcher inthe plane 4in which lie said trunnions, :andthe widened Louter portions .oi said :cutouts being `operative `as bearings for .said *trunnions,

WAYNE S. EVANS. LOUIS TARTAGLIA.

.REFERENCES CITED r'The following references are o'f record .in the iile 0i this rpatent:

UNITED SILAIES .PATENTS Number Name Date 476,364 Collins June?, 1892 554,313 Sabin Feb. .11, 1896 "770;70'4 Vogel Sept. 20,1904